package com.atguigu.security.config.config;

import com.atguigu.security.config.custom.CustomMd5PasswordEncoder;
import com.atguigu.security.config.custom.UserDetailsService;
import com.atguigu.security.config.filter.TokenAuthenticationFilter;
import com.atguigu.security.config.filter.TokenLoginFilter;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.security.authentication.AuthenticationManager;
import org.springframework.security.config.annotation.authentication.builders.AuthenticationManagerBuilder;
import org.springframework.security.config.annotation.web.builders.HttpSecurity;
import org.springframework.security.config.annotation.web.builders.WebSecurity;
import org.springframework.security.config.annotation.web.configuration.EnableWebSecurity;
import org.springframework.security.config.annotation.web.configuration.WebSecurityConfigurerAdapter;
import org.springframework.security.config.http.SessionCreationPolicy;
import org.springframework.security.web.authentication.UsernamePasswordAuthenticationFilter;

/**
 * @version 1.0
 * @autor 雷记新
 */
@Configuration
@EnableWebSecurity //@EnableWebSecurity是开启SpringSecurity的默认行为
public class WebSecurityConfig extends WebSecurityConfigurerAdapter {
    @Autowired
    private UserDetailsService userDetailsService;

    @Autowired
    private CustomMd5PasswordEncoder customMd5PasswordEncoder;


    @Bean
    @Override
    protected AuthenticationManager authenticationManager() throws Exception {
        return super.authenticationManager();
    }

    @Override
    protected void configure(HttpSecurity http) throws Exception {
        // 这是配置的关键，决定哪些接口开启防护，哪些接口绕过防护
        http
                //关闭csrf
                .csrf().disable()
                // 开启跨域以便前端调用接口
                .cors().and()
                .authorizeRequests()
                // 指定某些接口不需要通过验证即可访问。登陆接口肯定是不需要认证的
                .antMatchers("/admin/system/index/login").permitAll()
                // 这里意思是其它所有接口需要认证才能访问
                .anyRequest().authenticated()
                .and()
                //TokenAuthenticationFilter放到UsernamePasswordAuthenticationFilter的前面，这样做就是为了除了登录的时候去查询数据库外，其他时候都用token进行认证。
                .addFilterBefore(new TokenAuthenticationFilter(), UsernamePasswordAuthenticationFilter.class)
                .addFilter(new TokenLoginFilter(authenticationManager()));

        //禁用session
        http.sessionManagement().sessionCreationPolicy(SessionCreationPolicy.STATELESS);
    }
    @Override
    protected void configure(AuthenticationManagerBuilder auth) throws Exception {
        // 指定UserDetailService和加密器
        auth.userDetailsService(userDetailsService)
                .passwordEncoder(customMd5PasswordEncoder);
    }

}
